1366 - Incorrect integer value: '' for column `pella-ware`.`whos_online`.`customer_id` at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', 'lh12r3m39advjmqu9jojrc4qn6', '3.129.45.92', '1713567568', '1713567568', '/login.php?XTCsid=lh12r3m39advjmqu9jojrc4qn6')

[XT SQL Error]